NOTE: I am not at liberty to redistribute the documentation used to build this model.
Most images in this article are larger than what appears in your browser. To see any of them iin full resolution, just drag them to your desktop.
Prepping the model for "assembly" animations
I've been careful to keep the hierarchy organized in such a way that I could show factory-style assembly operations, if I wanted to. Here's an example showing the various modules spread out a bit.
Reviewing the geometry...
Sometimes it's nice to have a look at the geometry with no wireframes, colors, or textures as distractions. Here are a few ambient occlusion outputs which served that purpose. (For you MODO users, these used 512 samples.)
Update, winter of 2017/2018:
I'm currently updating this model to show all the changes Piaggio is making with the P180 "Evo", and I'm also creating models of their unmanned surveillance variant, and a long-range patrol version.